diff --git a/lib/hpricot/parse.rb b/lib/hpricot/parse.rb
index 7bb85d2..dbda0da 100644
--- a/lib/hpricot/parse.rb
+++ b/lib/hpricot/parse.rb
@@ -277,8 +277,13 @@ def DocType.parse(root_element_name, attrs, raw_string)
     result
   end
 
-  def ProcIns.parse(raw_string)
-    _, target, content = *raw_string.match(/\A<\?(\S+)\s+(.+)/m)
+  def ProcIns.parse(raw_string)
+    # _, target, content = *raw_string.match(/\A<\?(\S+)\s+(.+)/m)
+
+    # TODO: temporary workaround, needed until the bug #22518 (http://is.gd/jhaf) is fixed in IronRuby
+    matchData = raw_string.match(/\A<\?(\S+)\s+(.+)/m)
+    _, target, content = matchData.to_a
+
     result = ProcIns.new(target, content)
     result
   end